Improvement in governors



ZShyets-Sheetl. F. W. DURHAM & H. HOWSE.

GOVERNOR. No. 188,876. Patented March 27,1877.

Hen ry Hows e N-PETHis, PRDTO-LITNOGRAPHER, WASHINGTON. D 0,

Frederick Dur7cano.

Jhuenifo 71s ZSheets-Sheet 2. F. W. DURHAM & H. HOWSE.

GOVERNOR.

No.188,876, Patented March 27,1877.

lit-e347;

3 e OZZ m y NPETERS, PHOTO-LITHDGRAPHER. WASHINGTON, D c,

. Tolull whom it may concern; I ii fPA'rE- 'r OFFICE.

FR ERIOKYW. DURHAM :ANDZQHENLRY HOWSE, or HOMERTON, ENGLAND.

" IMPROVEM Ian-r IN GOVERNORS.

Specification forming att r Letters-Patent N0, 1 88,8176, dated March27, 1877'; application tiled I February 6, e77.

Be itknownthat wdFREn RIcK witmm; DUBHAMand HENRY HoWsE, both of Homer-Iton, "county-of Middlescx,England, haveim 1 rented an Improved Apparatusfor Governing and Indicating the Speed of Motor-E11 .gines; anddoyhereby decl'arefthat the following description, taken'inconnectionwith the accompanying drawings, hereinafter referred to,forms'a fulland exact specification of the same, wherein wehave setforth the, nature and principles-of our said improvement, by .which'ourinvention"mayv be distinguished from others of a.'similarfclass,together with suchlpartsas we"claimand desire to secure byLetters Patentthatis to say:

Our invention relates to improved apparatus for governing thefspeed ofmotor-engines, wherein the controlling effect is obtained bythe'jvaryingresistance due to the varyingspeed of rotation of vanesrevolving in a"liq-- .uid, causing motion, in one' direction or theother, to beimparted toa spindle acted on by a spring, and connected bya lever to the-supply-valve, or frictiOn-brakeQor other mechan ism thatcontrolsthe speedof the motor.

The construction of such apparatus will be readily understoodonreference to the accompanying drawings, in which-5 t Figure 1 showsaside elevation .ofourbefore-described improved governor. Fig. 2

shows a plan Fig. 3, a longitudinal section, and Fig. 4 an end-view. i

1- V In thejclpsed; casing A, filled with liquid, is

contained a spindle, B, having vanes G, which,

in revolving in the liqu t resistance to the rotation of thespindle,'--'such resistance varying with the speed'ofrotation. Un'the;

upper'endof the spindle is fixed a bevel-wheel,

D, in'gea'r withanotheribevel-wheel, E',-on

the short tubular 'sleeve,F,carriedby the E, on its other'end. Throughthe sleeve F passes a'shaft, H, on' the end of which is fixed a block,H, carrying two bevel-wheels, I I, in

gearwith the wheel E,-qand wi th another wheel, K ona shaft, K, to whichrotary mo tionisimp'arted through the pulley K from The inner end ofthis shaft is made to run loose in the block H. The other end of theshaft. H is carried in a bracket, G,

and has fixed thereon a small pulley, L, on which is coiled one end of acord or chain, M,

thejother end of which is drawn downward by the helical spring N insidethe casing N, fixed to A. The shaft H has also fixed upon it a notcheddisk, 0, in the notches of which engages the spring-catch P of a lever,P, loose onthe spindle, and connected by a rod, Q, to the throttle-valveor other controlling mechanism of the motor-engine.

From the above-described arrangement it .vvill "be seen that it rotarymotion be imparted to the spindle B and vanes 0 from the shaft K throughthe bevel-gearing, the resistance vanes O, whereupon. the shaft H willbecome stationary. Assuming this to take place when the normal speed ofthe motor-engine is attained, it will be seen that on an increase ofspeed taking place the increased resistance of the vanes will againcause the shaft H, and with it the disk 0 and lever P, to turn somewhatagainst the action of the spring N, thus causing the rod Q to actuatethe throttle-valve, so as to reduce the speed of the engine. If,

.on the other hand, the speed of the engine falls below that required,then the decreased resistance offered by the vanes will allow the springN to turnthe shaft H in the contrary direction, whereby the rod Q willbe 111 do to open the throttle-valve to a greater extent.

It will be evident that in place of the arrangement of bevel-gears, E II K described for imparting the partial rotary motion to the shaft Hthrough the increase or decrease of resistance of the vanes, any otherwell-known contrivance, such as sun and planet wheel motion, may beused, the sun-wheel being attached to the shaft K, the planet-wheel toan arm on the shaft H, and an internal wheel surrounding the two, andgearing with the planet-wheel, being connected "to the tubular sleeve F.

In order to increase the resistance of the fluid to the rotation of thevanes, it is preferred to provide in the casing fixed vanes O, whichprevent the entire body of the liquid from partaking of the rotarymotion. Should it be desired to alter the normal speed of the enginethis is effected by withdrawing the .which the lever has to be moved forworking at a certain normal speed, the lever being provided with anindex, P, for this purpose.

The apparatus may also be made to indicate the actual speed of theengine at any moment by providing at any point of the circumferenee ofthe disk 0 an index, 0 projecting over a graduated are, 0 fixed near thecircumference of the disk, so that as the disk turns, as beforedescribed, when the speed increases or diminishes. it, (the index,) inmoving over the scale, will indicate the number of revolutionscorresponding to the position assumed; or the scale may be formed on thedisk and the index be fixed at the side.

Having thus described, the nature of our invention, and in what mannerthesame is to be performed, weclaim- -m Y 1 a 1. In apparatusforgoverning the speed of i i prime movers, the vanes 0 operating incombination with the shaftsF H,'toothed gearing E E I I K, springN andlever I substan? tially as herein described.

2. 1n combinatiouwithx'the vanes O, operating withthe shaftsEH,toothedgearing E p E I I K, spring N, and lever P, the toothed disk 0, fixed onthe shaftflH, and operating in combination with the lever? and catch Psubstantially as and'forthe purposes specified. f I

3. In combination "with vanes 0, operating a with the shafts F H,.toothed gearing E HI I K, spring N, and:lever;1?,"the index 0 on thedisk 0, operating in combination with the scale 0, forindicating.thespeed oftheprime 1 mover, substantially as herein.described. p

In testimony whereofwe have signed [our 1 names to this specificationiii the presence of two subscribing witnesscslthis 19th day of HJanuary, 1877. '2 y FREDERICK YDURHA I g- HENRY EOWSE. J 1

. Witnesses:

Cass. D. ABEL, l J NO. P. M; MrL msn.

